If there is no mint mark, then it was minted in Philadelphia. If the entire coin is worn totally smooth then it's worth scrap silver value.
A well circulated one is worth about $5 or so, higher for better condition, uncirculated 1902s are worth from about $90 to $100 for an MS60, to $10,000 depending on condition... from unworn but nicked up slightly (MS60) to the finest known examples (MS67+) commanding $10,000.
$5 to $15,000 depending upon the mint mark and the condition of the coin.
1902 makes it a Barber dime, so the mint mark is on the reverse (tails) side, right at the bottom. No mark indicates Philadelphia, S is San Francisco, and O is New Orleans. There isn't a Denver version, because that facility wasn't open yet.
1902 would make it a Barber dime, not Mercury. It's worth a little over $2 on the low end and above $200 if it's in uncirculated condition with the mint mark O or S.
1908 is a common year Barber dime values for coins in average circulated condition is $2.00-$8.00
You possess a Barber Dime - a 1910 coin in good condition (G4) is worth: $3.00; if its mint state is MS60, the value rises to: $100.00.
You have a Barber dime; Mercury dimes started in 1916. The value depends on its grade & mint mark, but it's worth at least $4.00 just for the silver.
The value of a 1906 barber dime can vary depending on its condition and mint mark. In general, a circulated 1906 barber dime may be worth around $3 to $5, while a mint state coin in good condition could be valued at $20 or more. It is recommended to have the coin appraised by a professional to get an accurate assessment of its worth.
Not enough details. What year? What mint mark? How worn? Please post a new question with more information.
That would be pretty difficult to tell you, because the last Barber dimes were struck in 1916.Now if you have a so-called "Mercury" dime from 1943, it's worth about $1 in average condition, regardless of mint mark.
Means that it was minted in Philadelphia and if well circulated it is worth about $2.15 for scrap silver and more if in better condition.
If your dime was minted in Philadelphia it never had a mint mark, so the mark isn't "gone". Remember, dimes made in Philadelphia before 1980 don't have a "P" mint mark. Please see the Related Question for more information.
Retail price for a 1914 Barber Dime is $2.00-$8.00 for average circulated coins.